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Employee Benefit Plans Level 3 (Tables)
9 Months Ended
Sep. 30, 2016
Compensation and Retirement Disclosure [Abstract]  
Components of net periodic benefit cost
 
Pension Benefits
Other Postretirement Benefits
 
Three Months Ended September 30,
Three Months Ended September 30,
 
2016
2015
2016
2015
Service cost
$
1

$

$

$

Interest cost
60

60

2

3

Expected return on plan assets
(78
)
(77
)
(2
)
(3
)
Amortization of prior service credit


(2
)
(2
)
Amortization of actuarial loss
15

16

2

1

Net periodic benefit
$
(2
)
$
(1
)
$

$
(1
)